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2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8 
 kernel/drivers/net/wireless/rockchip_wlan/cywdhd/bcmdhd/bcmsdspi_linux.c
....@@ -1,15 +1,16 @@
1
-/* SPDX-License-Identifier: GPL-2.0 */
21 /*
32  * Broadcom SPI Host Controller Driver - Linux Per-port
43  *
5
- * Copyright (C) 1999-2019, Broadcom Corporation
6
- * 
4
+ * Portions of this code are copyright (c) 2022 Cypress Semiconductor Corporation
5
+ *
6
+ * Copyright (C) 1999-2017, Broadcom Corporation
7
+ *
78  *      Unless you and Broadcom execute a separate written software license
89  * agreement governing use of this software, this software is licensed to you
910  * under the terms of the GNU General Public License version 2 (the "GPL"),
1011  * available at http://www.broadcom.com/licenses/GPLv2.php, with the
1112  * following added to such license:
12
- * 
13
+ *
1314  *      As a special exception, the copyright holders of this software give you
1415  * permission to link this software with independent modules, and to copy and
1516  * distribute the resulting executable under terms of your choice, provided that
....@@ -17,7 +18,7 @@
1718  * the license of that module.  An independent module is a module which is not
1819  * derived from this software.  The special exception does not apply to any
1920  * modifications of the software.
20
- * 
21
+ *
2122  *      Notwithstanding the above, under no circumstances may you combine this
2223  * software in any way with any other Broadcom software provided under a license
2324  * other than the GPL, without Broadcom's express prior written consent.
....@@ -34,37 +35,257 @@
3435 #include <bcmsdbus.h>		/* bcmsdh to/from specific controller APIs */
3536 #include <sdiovar.h>		/* to get msglevel bit values */
3637 
38
+#ifdef BCMSPI_ANDROID
39
+#include <bcmsdh.h>
40
+#include <bcmspibrcm.h>
41
+#include <linux/spi/spi.h>
42
+#else
3743 #include <pcicfg.h>
3844 #include <sdio.h>		/* SDIO Device and Protocol Specs */
3945 #include <linux/sched.h>	/* request_irq(), free_irq() */
4046 #include <bcmsdspi.h>
47
+#include <bcmdevs.h>
4148 #include <bcmspi.h>
49
+#endif /* BCMSPI_ANDROID */
4250 
51
+#ifndef GSPIBCM
52
+#ifndef BCMSPI_ANDROID
4353 extern uint sd_crc;
4454 module_param(sd_crc, uint, 0);
4555 
4656 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
4757 #define KERNEL26
48
-#endif
58
+#endif // endif
59
+#endif /* !BCMSPI_ANDROID */
4960 
5061 struct sdos_info {
5162 	sdioh_info_t *sd;
5263 	spinlock_t lock;
64
+#ifndef BCMSPI_ANDROID
5365 	wait_queue_head_t intr_wait_queue;
66
+#endif /* !BCMSPI_ANDROID */
5467 };
68
+#endif /* !GSPIBCM */
5569 
70
+#ifndef BCMSPI_ANDROID
5671 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
5772 #define BLOCKABLE()	(!in_atomic())
5873 #else
5974 #define BLOCKABLE()	(!in_interrupt())
60
-#endif
75
+#endif // endif
6176 
77
+/* For Broadcom PCI-SPI Host controller (Raggedstone) */
78
+#if defined(BCMSPI) && (defined(BCMPCISPIHOST) || defined(GSPIBCM))
79
+#ifndef SDLX_MSG
80
+#define SDLX_MSG(x) printf x
81
+#endif // endif
82
+extern void* bcmsdh_probe(osl_t *osh, void *dev, void *sdioh, void *adapter_info,
83
+        uint bus_type, uint bus_num, uint slot_num);
84
+extern int bcmsdh_remove(bcmsdh_info_t *bcmsdh);
85
+extern sdioh_info_t * sdioh_attach(osl_t *osh, void *bar0, uint irq);
86
+extern SDIOH_API_RC sdioh_detach(osl_t *osh, sdioh_info_t *sd);
87
+
88
+/* forward declarations for PCI probe and remove functions. */
89
+static int __devinit bcmsdh_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
90
+static void __devexit bcmsdh_pci_remove(struct pci_dev *pdev);
91
+
92
+/* forward declarations for PCI probe and remove functions. */
93
+static int __devinit bcmsdh_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
94
+static void __devexit bcmsdh_pci_remove(struct pci_dev *pdev);
95
+
96
+/**
97
+ * pci id table
98
+ */
99
+static struct pci_device_id bcmsdh_pci_devid[] __devinitdata = {
100
+	{ vendor: PCI_ANY_ID,
101
+	device: PCI_ANY_ID,
102
+	subvendor: PCI_ANY_ID,
103
+	subdevice: PCI_ANY_ID,
104
+	class: 0,
105
+	class_mask: 0,
106
+	driver_data: 0,
107
+	},
108
+	{ 0, }
109
+};
110
+MODULE_DEVICE_TABLE(pci, bcmsdh_pci_devid);
111
+
112
+/**
113
+ * PCI-SPI Host Controller: pci driver info
114
+ */
115
+static struct pci_driver bcmsdh_pci_driver = {
116
+	node:       {},
117
+	name:       "bcmsdh",
118
+	id_table:   bcmsdh_pci_devid,
119
+	probe:      bcmsdh_pci_probe,
120
+	remove:     bcmsdh_pci_remove,
121
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0))
122
+	save_state: NULL,
123
+#endif // endif
124
+	suspend:    NULL,
125
+	resume:     NULL,
126
+};
127
+
128
+/* Force detection to a particular PCI */
129
+/* slot only . Allows for having multiple */
130
+/* WL devices at once in a PC */
131
+/* Only one instance of dhd will be */
132
+/* usable at a time */
133
+/* Upper word is bus number, */
134
+/* lower word is slot number */
135
+/* Default value of 0xffffffff turns this off */
136
+extern uint sd_pci_slot;
137
+module_param(sd_pci_slot, uint, 0);
138
+
139
+/**
140
+ * Detect supported Host Controller and attach if found.
141
+ *
142
+ * Determine if the device described by pdev is a supported PCI Host
143
+ * Controller.  If so, attach to it and attach to the target device.
144
+ */
145
+static int __devinit
146
+bcmsdh_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
147
+{
148
+	osl_t *osh = NULL;
149
+	sdioh_info_t *sdioh = NULL;
150
+	void *bcmsdh;
151
+
152
+	int rc;
153
+
154
+	if (sd_pci_slot != 0xFFFFFFFF) {
155
+		if (pdev->bus->number != (sd_pci_slot>>16) ||
156
+				PCI_SLOT(pdev->devfn) != (sd_pci_slot&0xffff)) {
157
+			SDLX_MSG(("%s: %s: bus %X, slot %X, vend %X, dev %X\n",
158
+				__FUNCTION__,
159
+				bcmsdh_chipmatch(pdev->vendor, pdev->device)
160
+				?"Found compatible SDIOHC"
161
+				:"Probing unknown device",
162
+				pdev->bus->number, PCI_SLOT(pdev->devfn), pdev->vendor,
163
+				pdev->device));
164
+			return -ENODEV;
165
+		}
166
+		SDLX_MSG(("%s: %s: bus %X, slot %X, vendor %X, device %X (good PCI location)\n",
167
+			__FUNCTION__,
168
+			bcmsdh_chipmatch(pdev->vendor, pdev->device)
169
+			?"Using compatible SDIOHC"
170
+			:"WARNING, forced use of unkown device",
171
+			pdev->bus->number, PCI_SLOT(pdev->devfn), pdev->vendor, pdev->device));
172
+	}
173
+
174
+	if ((pdev->vendor == VENDOR_TI) && ((pdev->device == PCIXX21_FLASHMEDIA_ID) ||
175
+		(pdev->device == PCIXX21_FLASHMEDIA0_ID))) {
176
+		uint32 config_reg;
177
+
178
+		SDLX_MSG(("%s: Disabling TI FlashMedia Controller.\n", __FUNCTION__));
179
+		if (!(osh = osl_attach(pdev, PCI_BUS, FALSE))) {
180
+			SDLX_MSG(("%s: osl_attach failed\n", __FUNCTION__));
181
+			goto err;
182
+		}
183
+		config_reg = OSL_PCI_READ_CONFIG(osh, 0x4c, 4);
184
+
185
+		/*
186
+		 * Set MMC_SD_DIS bit in FlashMedia Controller.
187
+		 * Disbling the SD/MMC Controller in the FlashMedia Controller
188
+		 * allows the Standard SD Host Controller to take over control
189
+		 * of the SD Slot.
190
+		 */
191
+		config_reg |= 0x02;
192
+		OSL_PCI_WRITE_CONFIG(osh, 0x4c, 4, config_reg);
193
+		osl_detach(osh);
194
+	}
195
+	/* match this pci device with what we support */
196
+	/* we can't solely rely on this to believe it is our SDIO Host Controller! */
197
+	if (!bcmsdh_chipmatch(pdev->vendor, pdev->device)) {
198
+		if (pdev->vendor == VENDOR_BROADCOM) {
199
+			SDLX_MSG(("%s: Unknown Broadcom device (vendor: %#x, device: %#x).\n",
200
+				__FUNCTION__, pdev->vendor, pdev->device));
201
+		}
202
+		return -ENODEV;
203
+	}
204
+
205
+	/* this is a pci device we might support */
206
+	SDLX_MSG(("%s: Found possible SDIO Host Controller: bus %d slot %d func %d irq %d\n",
207
+		__FUNCTION__,
208
+		pdev->bus->number, PCI_SLOT(pdev->devfn),
209
+		PCI_FUNC(pdev->devfn), pdev->irq));
210
+
211
+	/* use bcmsdh_query_device() to get the vendor ID of the target device so
212
+	 * it will eventually appear in the Broadcom string on the console
213
+	 */
214
+
215
+	/* allocate SDIO Host Controller state info */
216
+	if (!(osh = osl_attach(pdev, PCI_BUS, FALSE))) {
217
+		SDLX_MSG(("%s: osl_attach failed\n", __FUNCTION__));
218
+		goto err;
219
+	}
220
+
221
+	/* map to address where host can access */
222
+	pci_set_master(pdev);
223
+	rc = pci_enable_device(pdev);
224
+	if (rc) {
225
+		SDLX_MSG(("%s: Cannot enable PCI device\n", __FUNCTION__));
226
+		goto err;
227
+	}
228
+
229
+	if (!(sdioh = sdioh_attach(osh, (void *)(ulong)pci_resource_start(pdev, 0), pdev->irq))) {
230
+		SDLX_MSG(("%s: bcmsdh_attach failed\n", __FUNCTION__));
231
+		goto err;
232
+	}
233
+
234
+#ifdef GSPIBCM
235
+	bcmsdh = bcmsdh_probe(osh, &pdev->dev, sdioh, NULL, PCI_BUS, -1, -1);
236
+	if (bcmsdh == NULL) {
237
+#else
238
+	sdioh->bcmsdh = bcmsdh_probe(osh, &pdev->dev, sdioh, NULL, PCI_BUS, -1, -1);
239
+	if (sdioh->bcmsdh == NULL) {
240
+#endif /* GSPIBCM */
241
+		sd_err(("%s: bcmsdh_probe failed\n", __FUNCTION__));
242
+		goto err;
243
+	}
244
+
245
+	pci_set_drvdata(pdev, sdioh);
246
+	return 0;
247
+
248
+	/* error handling */
249
+err:
250
+	if (sdioh != NULL)
251
+		sdioh_detach(osh, sdioh);
252
+	if (osh != NULL)
253
+		osl_detach(osh);
254
+	return -ENOMEM;
255
+
256
+}
257
+
258
+/**
259
+ * Detach from target devices and PCI-SPI Host Controller
260
+ */
261
+static void __devexit
262
+bcmsdh_pci_remove(struct pci_dev *pdev)
263
+{
264
+
265
+	sdioh_info_t *sdioh = NULL;
266
+	osl_t *osh;
267
+
268
+	sdioh = pci_get_drvdata(pdev);
269
+	if (sdioh == NULL) {
270
+		sd_err(("%s: error, no sdh handler found\n", __FUNCTION__));
271
+		return;
272
+	}
273
+
274
+	osh = sdioh->osh;
275
+	bcmsdh_remove(sdioh->bcmsdh);
276
+	sdioh_detach(osh, sdioh);
277
+	osl_detach(osh);
278
+
279
+}
280
+#endif /* BCMSPI && BCMPCISPIHOST */
281
+
282
+#ifndef GSPIBCM
62283 /* Interrupt handler */
63284 static irqreturn_t
64285 sdspi_isr(int irq, void *dev_id
65286 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
66287 , struct pt_regs *ptregs
67
-#endif
288
+#endif // endif
68289 )
69290 {
70291 	sdioh_info_t *sd;
....@@ -89,17 +310,100 @@
89310 		return IRQ_RETVAL(ours);
90311 	}
91312 }
313
+#endif /* !GSPIBCM */
314
+#endif /* !BCMSPI_ANDROID */
92315 
316
+#ifdef BCMSPI_ANDROID
317
+static struct spi_device *gBCMSPI = NULL;
93318 
319
+extern int bcmsdh_probe(struct device *dev);
320
+extern int bcmsdh_remove(struct device *dev);
321
+
322
+static int bcmsdh_spi_probe(struct spi_device *spi_dev)
323
+{
324
+	int ret = 0;
325
+
326
+	gBCMSPI = spi_dev;
327
+
328
+#ifdef SPI_PIO_32BIT_RW
329
+	spi_dev->bits_per_word = 32;
330
+#else
331
+	spi_dev->bits_per_word = 8;
332
+#endif /* SPI_PIO_32BIT_RW */
333
+	ret = spi_setup(spi_dev);
334
+
335
+	if (ret) {
336
+		sd_err(("bcmsdh_spi_probe: spi_setup fail with %d\n", ret));
337
+	}
338
+	sd_err(("bcmsdh_spi_probe: spi_setup with %d, bits_per_word=%d\n",
339
+		ret, spi_dev->bits_per_word));
340
+	ret = bcmsdh_probe(&spi_dev->dev);
341
+
342
+	return ret;
343
+}
344
+
345
+static int  bcmsdh_spi_remove(struct spi_device *spi_dev)
346
+{
347
+	int ret = 0;
348
+
349
+	ret = bcmsdh_remove(&spi_dev->dev);
350
+	gBCMSPI = NULL;
351
+
352
+	return ret;
353
+}
354
+
355
+static struct spi_driver bcmsdh_spi_driver = {
356
+	.probe		= bcmsdh_spi_probe,
357
+	.remove		= bcmsdh_spi_remove,
358
+	.driver		= {
359
+		.name = "wlan_spi",
360
+		.bus    = &spi_bus_type,
361
+		.owner  = THIS_MODULE,
362
+		},
363
+};
364
+#endif /* BCMSPI_ANDROID */
365
+
366
+/*
367
+ * module init
368
+*/
369
+int bcmsdh_register_client_driver(void)
370
+{
371
+	int error = 0;
372
+	sd_trace(("bcmsdh_gspi: %s Enter\n", __FUNCTION__));
373
+#if defined(BCMSPI) && (defined(BCMPCISPIHOST) || defined(GSPIBCM))
374
+	error = pci_module_init(&bcmsdh_pci_driver);
375
+#else
376
+	error = spi_register_driver(&bcmsdh_spi_driver);
377
+#endif /* BCMSPI && BCMPCISPIHOST */
378
+
379
+	return error;
380
+}
381
+
382
+/*
383
+ * module cleanup
384
+*/
385
+void bcmsdh_unregister_client_driver(void)
386
+{
387
+	sd_trace(("%s Enter\n", __FUNCTION__));
388
+#if defined(BCMSPI) && (defined(BCMPCISPIHOST) || defined(GSPIBCM))
389
+	pci_unregister_driver(&bcmsdh_pci_driver);
390
+#else
391
+	spi_unregister_driver(&bcmsdh_spi_driver);
392
+#endif /* BCMSPI && BCMPCISPIHOST */
393
+}
394
+
395
+#ifndef GSPIBCM
94396 /* Register with Linux for interrupts */
95397 int
96398 spi_register_irq(sdioh_info_t *sd, uint irq)
97399 {
400
+#ifndef BCMSPI_ANDROID
98401 	sd_trace(("Entering %s: irq == %d\n", __FUNCTION__, irq));
99402 	if (request_irq(irq, sdspi_isr, IRQF_SHARED, "bcmsdspi", sd) < 0) {
100403 		sd_err(("%s: request_irq() failed\n", __FUNCTION__));
101404 		return ERROR;
102405 	}
406
+#endif /* !BCMSPI_ANDROID */
103407 	return SUCCESS;
104408 }
105409 
....@@ -107,10 +411,13 @@
107411 void
108412 spi_free_irq(uint irq, sdioh_info_t *sd)
109413 {
414
+#ifndef BCMSPI_ANDROID
110415 	free_irq(irq, sd);
416
+#endif /* !BCMSPI_ANDROID */
111417 }
112418 
113419 /* Map Host controller registers */
420
+#ifndef BCMSPI_ANDROID
114421 uint32 *
115422 spi_reg_map(osl_t *osh, uintptr addr, int size)
116423 {
....@@ -122,6 +429,7 @@
122429 {
123430 	REG_UNMAP((void*)(uintptr)addr);
124431 }
432
+#endif /* !BCMSPI_ANDROID */
125433 
126434 int
127435 spi_osinit(sdioh_info_t *sd)
....@@ -135,7 +443,9 @@
135443 
136444 	sdos->sd = sd;
137445 	spin_lock_init(&sdos->lock);
446
+#ifndef BCMSPI_ANDROID
138447 	init_waitqueue_head(&sdos->intr_wait_queue);
448
+#endif /* !BCMSPI_ANDROID */
139449 	return BCME_OK;
140450 }
141451 
....@@ -166,19 +476,23 @@
166476 		return SDIOH_API_RC_FAIL;
167477 	}
168478 
479
+#ifndef BCMSPI_ANDROID
169480 	if (enable && !(sd->intr_handler && sd->intr_handler_arg)) {
170481 		sd_err(("%s: no handler registered, will not enable\n", __FUNCTION__));
171482 		return SDIOH_API_RC_FAIL;
172483 	}
484
+#endif /* !BCMSPI_ANDROID */
173485 
174486 	/* Ensure atomicity for enable/disable calls */
175487 	spin_lock_irqsave(&sdos->lock, flags);
176488 
177489 	sd->client_intr_enabled = enable;
490
+#ifndef BCMSPI_ANDROID
178491 	if (enable && !sd->lockcount)
179492 		spi_devintr_on(sd);
180493 	else
181494 		spi_devintr_off(sd);
495
+#endif /* !BCMSPI_ANDROID */
182496 
183497 	spin_unlock_irqrestore(&sdos->lock, flags);
184498 
....@@ -202,7 +516,12 @@
202516 		sd_err(("%s: Already locked!\n", __FUNCTION__));
203517 		ASSERT(sd->lockcount == 0);
204518 	}
519
+#ifdef BCMSPI_ANDROID
520
+	if (sd->client_intr_enabled)
521
+		bcmsdh_oob_intr_set(0);
522
+#else
205523 	spi_devintr_off(sd);
524
+#endif /* BCMSPI_ANDROID */
206525 	sd->lockcount++;
207526 	spin_unlock_irqrestore(&sdos->lock, flags);
208527 }
....@@ -222,16 +541,21 @@
222541 
223542 	spin_lock_irqsave(&sdos->lock, flags);
224543 	if (--sd->lockcount == 0 && sd->client_intr_enabled) {
544
+#ifdef BCMSPI_ANDROID
545
+		bcmsdh_oob_intr_set(1);
546
+#else
225547 		spi_devintr_on(sd);
548
+#endif /* BCMSPI_ANDROID */
226549 	}
227550 	spin_unlock_irqrestore(&sdos->lock, flags);
228551 }
229552 
553
+#ifndef BCMSPI_ANDROID
230554 void spi_waitbits(sdioh_info_t *sd, bool yield)
231555 {
232556 #ifndef BCMSDYIELD
233557 	ASSERT(!yield);
234
-#endif
558
+#endif // endif
235559 	sd_trace(("%s: yield %d canblock %d\n",
236560 	          __FUNCTION__, yield, BLOCKABLE()));
237561 
....@@ -251,3 +575,84 @@
251575 	}
252576 
253577 }
578
+#else /* !BCMSPI_ANDROID */
579
+int bcmgspi_dump = 0;		/* Set to dump complete trace of all SPI bus transactions */
580
+
581
+static void
582
+hexdump(char *pfx, unsigned char *msg, int msglen)
583
+{
584
+	int i, col;
585
+	char buf[80];
586
+
587
+	ASSERT(strlen(pfx) + 49 <= sizeof(buf));
588
+
589
+	col = 0;
590
+
591
+	for (i = 0; i < msglen; i++, col++) {
592
+		if (col % 16 == 0)
593
+			strcpy(buf, pfx);
594
+		sprintf(buf + strlen(buf), "%02x", msg[i]);
595
+		if ((col + 1) % 16 == 0)
596
+			printf("%s\n", buf);
597
+		else
598
+			sprintf(buf + strlen(buf), " ");
599
+	}
600
+
601
+	if (col % 16 != 0)
602
+		printf("%s\n", buf);
603
+}
604
+
605
+/* Send/Receive an SPI Packet */
606
+void
607
+spi_sendrecv(sdioh_info_t *sd, uint8 *msg_out, uint8 *msg_in, int msglen)
608
+{
609
+	int write = 0;
610
+	int tx_len = 0;
611
+	struct spi_message msg;
612
+	struct spi_transfer t[2];
613
+
614
+	spi_message_init(&msg);
615
+	memset(t, 0, 2*sizeof(struct spi_transfer));
616
+
617
+	if (sd->wordlen == 2)
618
+#if !(defined(SPI_PIO_RW_BIGENDIAN) && defined(SPI_PIO_32BIT_RW))
619
+		write = msg_out[2] & 0x80;
620
+#else
621
+		write = msg_out[1] & 0x80;
622
+#endif /* !(defined(SPI_PIO_RW_BIGENDIAN) && defined(SPI_PIO_32BIT_RW)) */
623
+	if (sd->wordlen == 4)
624
+#if !(defined(SPI_PIO_RW_BIGENDIAN) && defined(SPI_PIO_32BIT_RW))
625
+		write = msg_out[0] & 0x80;
626
+#else
627
+		write = msg_out[3] & 0x80;
628
+#endif /* !(defined(SPI_PIO_RW_BIGENDIAN) && defined(SPI_PIO_32BIT_RW)) */
629
+
630
+	if (bcmgspi_dump) {
631
+		hexdump(" OUT: ", msg_out, msglen);
632
+	}
633
+
634
+	tx_len = write ? msglen-4 : 4;
635
+
636
+	sd_trace(("spi_sendrecv: %s, wordlen %d, cmd : 0x%02x 0x%02x 0x%02x 0x%02x\n",
637
+		write ? "WR" : "RD", sd->wordlen,
638
+		msg_out[0], msg_out[1], msg_out[2], msg_out[3]));
639
+
640
+	t[0].tx_buf = (char *)&msg_out[0];
641
+	t[0].rx_buf = 0;
642
+	t[0].len = tx_len;
643
+
644
+	spi_message_add_tail(&t[0], &msg);
645
+
646
+	t[1].rx_buf = (char *)&msg_in[tx_len];
647
+	t[1].tx_buf = 0;
648
+	t[1].len = msglen-tx_len;
649
+
650
+	spi_message_add_tail(&t[1], &msg);
651
+	spi_sync(gBCMSPI, &msg);
652
+
653
+	if (bcmgspi_dump) {
654
+		hexdump(" IN  : ", msg_in, msglen);
655
+	}
656
+}
657
+#endif /* !BCMSPI_ANDROID */
658
+#endif /* !GSPIBCM */